GLUI is a GLUT-based C++ user interface library which provides controls such as buttons, checkboxes, radio buttons, and spinners to OpenGL applications. It is window-system independent, using GLUT or FreeGLUT.

Explore procedural worlds on your GPU. Worlds are defined by GLSL programs that map XYZ coordinates to the distance to the nearest surface. Design your own worlds, modify parameters in realtime and render hires videos of your recorded journey.

SPARK is an advanced particle engine written in C++ It is designed to be generic and to be integrated in any rendering engine. Some rendering modules have already been designed for OpenGL, Irrlicht and SFML

OpenCTM is a file format, a software library and a tool set for compression of 3D triangle meshes. The geometry is compressed to a fraction of comparable file formats (3DS, STL, COLLADA...), and the format is accessible through a simple, portable API

Motion Blur is a free, professional program to simulate various visual effects like blur, judder or tearing that accompany a motion picture. This gives you a preview of how a real motion picture would look like when filmed with the custom parameters.